<!DOCTYPE html>
<html >
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box1{
            width: 300px;
            height: 300px;
            border-width: 10px;
            border-color: crimson;
            border-style: solid;
            border: 1px solid blue;
        }
    </style>
</head>
<body>
    <div class="box1"></div>
</body>
</html>